Double intramolecular hydrogen transfer assisted dual emission in a carbazole-embedded porphyrin-like macrocycle.
Arumugan KalaiselvanAswini SpergenIsukapalli Sai Vamsi KrishnaVennapusa Sivaranjana ReddySabapathi GokulnathPublished in: Chemical communications (Cambridge, England) (2021)
The introduction of a pyrrole ring at one of the meso positions of carbazole-based porphyrins lowers the structural symmetry and results in dual emission, which strongly depends on the excitation wavelength and temperature. The origin of dual emission induced by NH-tautomerism is confirmed via photophysical and DFT calculations.